EP 1939666 B1 20121205 - Optical scanning device and image forming apparatus using the same
Title (en)
Optical scanning device and image forming apparatus using the same
Title (de)
Optische Abtastvorrichtung und Bilderzeugungsvorrichtung damit
Title (fr)
Dispositif de balayage optique et appareil de formation d'images l'utilisant
Publication
Application
Priority
JP 2006349557 A 20061226
Abstract (en)
[origin: EP1939666A1] An optical scanning device and an image forming apparatus having the same include a light source (1), a deflecting system (5), an imaging optical system (Lb) with at least one imaging optical element (6) for imaging a light beam deflected by the deflecting system on a surface to be scanned (8), and at least one reflection type optical element (6) disposed between the imaging optical element and the scanned surface, wherein the deflected light beam passes through a first transmission surface and a second transmission surface of the imaging optical element in this order and, after being reflected by the reflection type optical element, the light beam then passes through a third transmission surfaced and a fourth transmission surface of the imaging optical element in this order, and wherein a relation |øM/ø|<0.1 is satisfied where o is an axial combined power within a main-scan section of the imaging optical element through which the light beam passes again, and øM is an axial combined power within a main-scan section of the reflection type optical element.
IPC 8 full level
G02B 26/12 (2006.01); H04N 1/04 (2006.01)
CPC (source: EP KR US)
G02B 13/0005 (2013.01 - KR); G02B 26/123 (2013.01 - KR); G02B 26/125 (2013.01 - EP KR US); G02B 26/126 (2013.01 - EP KR US); G03G 15/011 (2013.01 - KR); G03G 15/0409 (2013.01 - KR)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 1939666 A1 20080702; EP 1939666 B1 20121205; CN 101211010 A 20080702; CN 101211010 B 20100609; JP 2008158415 A 20080710; JP 5171029 B2 20130327; KR 100943544 B1 20100222; KR 20080060181 A 20080701; US 2008151326 A1 20080626; US 7522324 B2 20090421
DOCDB simple family (application)
EP 07024977 A 20071221; CN 200710305402 A 20071226; JP 2006349557 A 20061226; KR 20070136995 A 20071226; US 96205307 A 20071220